8. Belt out some karaoke tunes

In Japan, karaoke is as popular as it ever was, with friends spending hours in little rooms with mics, big songbooks and loud voices. There are hundreds of English-language songs available — old and new — so choose a number, take a deep breath and step up to the plate. It doesn't matter if you sound like a cat in a washing machine; taking part is what counts. It's a great stress relief and far more addictive than you might imagine. Best of all, you're with your friends in a private room, so don't be shy!